#2DC4A8

CSS

:root {
  --turquoise: #2dc4a8;
  --turquoise-rgb: 45 196 168;
  --turquoise-oklch: oklch(0.738 0.128 176.6);
}

.element {
  color: var(--turquoise);
  background-color: hsl(169 63% 47%);
  border-color: oklch(0.738 0.128 176.6);
}

Tailwind CSS v4

@theme {
  --color-turquoise: #2dc4a8;
  --color-turquoise-50: #cffff5;
  --color-turquoise-100: #baf7e8;
  --color-turquoise-200: #96e7d5;
  --color-turquoise-300: #65cdb8;
  --color-turquoise-400: #29b79c;
  --color-turquoise-500: #00a084;
  --color-turquoise-600: #008870;
  --color-turquoise-700: #006d59;
  --color-turquoise-800: #00503f;
  --color-turquoise-900: #00382c;
  --color-turquoise-950: #002219;
}

SCSS

$turquoise: #2dc4a8;
$turquoise-rgb: 45, 196, 168;
$turquoise-light: mix(#fff, $turquoise, 20%);
$turquoise-dark: mix(#000, $turquoise, 20%);

.element {
  color: $turquoise;
  box-shadow: 0 0 0 2px rgba($turquoise, 0.35);
}